Table 3.

Cause-specific relative hazard for each event (bivariate analysis with a Cox model)

CovariateCause-Specific RH (95% CI)
Transfer to HDRenal RecoveryRenal TransplantationDeath on PD
Per year of age0.98 (0.98–0.99)1.01 (1.00–1.02)0.94 (0.94–0.94)1.06 (1.05–1.06)
Male sex1.49 (1.06–1.24)1.24 (0.89–1.73)1.13 (1.02–1.25)1.05 (0.98–1.11)
Underlying nephropathy
 unknownReferenceReferenceReferenceReference
 interstitial nephritis0.96 (0.79– 1.17)0.85 (0.33–2.21)1.63 (1.29–2.06)0.62 (0.53–0.76)
 GN1.29 (1.11–1.49)0.75 (0.35–1.59)2.48 (2.06–2.98)0.38 (0.32–0.45)
 diabetes1.07 (0.93 –1.24)0.73 (0.36–1.46)0.40 (0.31–0.51)1.11 (0.99–1.28)
 PKD1.07 (0.88–1.31)0.44 (0.13–1.55)2.83 (2.30–3.49)0.28 (0.22–0.37)
 miscellaneous1.11 (0.87–1.40)2.71 (1.21–5.96)2.06 (1.58–2.68)0.79 (0.64–0.97)
 urologic0.95 (0.73–1.22)0.54 (0.12–2.37)2.64 (2.06–3.38)0.33 (0.24–0.44)
 vascular0.83 (0.73–0.96)1.92 (1.08–3.42)0.42 (0.33–0.52)1.09 (0.98–1.21)
 systemic disease1.38 (1.07–1.79)2.24 (0.86–5.80)1.75 (1.27–2.41)0.74 (0.57–0.95)
Diabetes1.00 (0.92–1.09)0.84 (0.59–1.20)0.24 (0.20–0.28)1.52 (1.42–1.63)
CCI (per unit)0.94 (0.92–0.95)1.10 (1.04–1.17)0.56 (0.54–0.57)1.25 (1.24–1.27)
Modified CCI (per unit)0.96 (0.94–0.98)1.10 (1.02–1.18)0.54 (0.52–0.57)1.22 (1.20–1.23)
HD before PD1.34 (1.22– 1.48)1.78 (1.23–2.58)0.93 (0.80–1.07)1.12 (1.03–1.23)
Transplantation failure1.76 (1.43–2.17)0.31 (0.04–2.3)1.96 (1.51–2.55)0.25 (0.15–0.39)
Assisted PD0.69 (0.63 –0.74)1.13 (0.82–1.57)0.06 (0.05–0.07)4.40 (4.04–4.81)
Home visitsa1.02 (0.93–1.11)1.74 (1.19–2.56)1.01 (0.93–1.11)0.96 (0.89–1.03)
Modality of assistance
 Self-PDReferenceReferenceReferenceReference
 Family-assisted0.76 (0.66–0.87)1.10 (0.64–1.90)0.11 (0.08–0.16)3.94 (3.51–4.44)
 Nurse-assisted0.67 (0.61–0.73)1.14 (0.81–1.61)0.04 (0.03–0.05)4.52 (4.12–4.95)
Center size by categories (new patients per year)
 <10 ReferenceReferenceReferenceReference
 10–200.90 (0.83 –0.98)1.51 (1.05–2.18)0.97 (0.86–1.08)0.89 (0.83–0.96)
 >200.83 (0.73–0.93)1.61 (1.02–2.55)1.29 (1.13–1.48)1.11(1.00–1.21)
Early peritonitis1.53 (1.34–2.06)0.54 (0.08–3.86)1.20 (0.78–1.85)1.09 (0.79–1.45)
First PD modality (CAPD)0.82 (0.75–0.89)1.20 (0.80–1.79)0.46 (0.41–0.51)1.99 (1.80–2.20)
  • RH, relative hazard; CI, confidence interval; PD, peritoneal dialysis; PKD, polycystic kidney disease; CCI, Charlson comorbidity index; HD, hemodialysis; CAPD, continuous ambulatory peritoneal dialysis.

  • a Treated in a center providing home visit by nurse from the dialysis center.